Publications

  • TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf

    Context. The NASA mission TESS is currently doing an all-sky survey from space to detect transiting planets around bright stars. As part of the validation process, the most promising planet candidates need to be confirmed and characterized using follow-up observations. Aims: In this article, our aim is to confirm the planetary nature of the

    Murgas, F. et al.

    Advertised on:

    9
    2021
  • Warm terrestrial planet with half the mass of Venus transiting a nearby star

    In recent years, the advent of a new generation of radial velocity instruments has allowed us to detect planets with increasingly lower mass and to break the one Earth-mass barrier. Here we report a new milestone in this context by announcing the detection of the lowest-mass planet measured so far using radial velocities: L 98-59 b, a rocky planet

    Demangeon, O. D. S. et al.

    Advertised on:

    9
    2021
  • Surface brightness fluctuations to constrain secondary stellar populations: revealing very low-metallicity stars in massive galaxies

    The aim of this work is to explore the potential of surface brightness fluctuations (SBF) for studying composite stellar populations (CSP). To do so, we have computed the standard (mean) and SBF spectra with E-MILES stellar population synthesis code. We have created a set of models composed by different mass fractions of two single stellar

    Rodríguez-Beltrán, P. et al.

    Advertised on:

    10
    2021
  • WALLABY pre-pilot survey: two dark clouds in the vicinity of NGC 1395

    We present the Australian Square Kilometre Array Pathfinder (ASKAP) WALLABY pre-pilot observations of two 'dark' H I sources (with H I masses of a few times 108 $\rm {M}_\odot$ and no known stellar counterpart) that reside within 363 kpc of NGC 1395, the most massive early-type galaxy in the Eridanus group of galaxies. We investigate whether these

    Wong, O. I. et al.

    Advertised on:

    10
    2021
  • OzDES Reverberation Mapping Programme: the first Mg II lags from 5 yr of monitoring

    Reverberation mapping is a robust method to measure the masses of supermassive black holes outside of the local Universe. Measurements of the radius-luminosity (R-L) relation using the Mg II emission line are critical for determining these masses near the peak of quasar activity at z ≍ 1-2, and for calibrating secondary mass estimators based on Mg

    Yu, Zhefu et al.

    Advertised on:

    11
    2021
  • The PICASSO map-making code: application to a simulation of the QUIJOTE northern sky survey

    Map-making is an important step for the data analysis of cosmic microwave background (CMB) experiments. It consists of converting the data, which are typically a long, complex, and noisy collection of measurements, into a map, which is an image of the observed sky. We present in this paper a new map-making code named PICASSO (Polarization and

    Guidi, F. et al.

    Advertised on:

    11
    2021